Bonneville America Forums Forums Technical Forums Performance Mods Big Bore,liners or no?What best/

I did go that route with the nicad coated cylinders from D&D on my Speedy. It's even the high compression kit also with 12.1:1 ratio. I had the kit put on about 3,000 miles ago, and haven't looked back since. She still pulls extreamly hard, and I have brought the forks to the stops on more than one occation. The lightened flywheel helps also, with keeping everything spooling up quick. I did decide to go with the D&D kit for 3 reasons:
1: They have great service.
2: They are right down the road from me.
3: I've personally seen thier flat tracker bike with the same kit in it, and if it can stand that kind of abuse, then it is good enough for me.

I have not had the chance to ride a bike with the Wiseco kit on it, but with the compression ratio aside, I would guess it is about the same. As for the engine running cooler, depending on the outside temp, I'm usually running around 165 to 180 degrees. I know that is quite a range for the oil, but in Florida, it can get pretty hot. Again, I am not too sure what the fellas with the Wiseco kits are running (oil temp).